A passport card is cheaper and may be enough for your needs — if you travel by land or sea to eligible countries and don't intend to travel on to other countries. If you think you might travel internationally by air to any international destination, you need a passport book.
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A traditional passport (also called a passport book) is a valid ID for all forms of travel — land, sea, and air — both internationally and domestically. A passport card can be used for international land and sea travel to select countries.
A valid passport book is required to enter Mexico by air, and those attempting to enter at an airport with a U.S. passport card only may be denied admission.
But, you have to keep in mind the limitations on a passport card. You're restricted to traveling to 20 countries and only by land or sea. Also, you cannot use your passport card for international air travel, only as ID for domestic air travel. The passport booklet represents a universal travel option for U.S. citizens.
Proper identification is the foundation of international travel. As a result, you should ensure to always have an official identification document with you.
A valid passport book is required to enter Mexico by air, and those attempting to enter at an airport with a U.S. passport card only may be denied admission.
A passport card is cheaper and may be enough for your needs — if you travel by land or sea to eligible countries and don't intend to travel on to other countries. If you think you might travel internationally by air to any international destination, you need a passport book.
You don't need a passport for the Aloha State if you're a US citizen or permanent resident. However, there is a curious caveat where you'll need a passport on hand. If you're traveling from or through a foreign country, you'll need a valid passport to get into Hawaii.